std.sumtype?

[ryuukk_]

Things would improve drastically if std wasn't designed with 
assumptions on how user will use something

STD should be here to serve as a base for people to design 
libraries, not to enforce how libraries should be designed, 
because it'll only serve one way to write software

Fine for C# when microsoft want to sell their ASP.NET on Azure, 
but it's not good if it's something like C++, now everyone 
complain and rewrite their own STL, for the better, i feel the 
same with D's STD (the language itself is perfect)